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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 14 — Jul. 7, 2008
  • pp: 10858–10866

Enhanced directional excitation and emission of single emitters by a nano-optical Yagi-Uda antenna

Tim H. Taminiau, Fernando D. Stefani, and Niek F. van Hulst  »View Author Affiliations

Optics Express, Vol. 16, Issue 14, pp. 10858-10866 (2008)

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We demonstrate by 3D numerical calculations that the interaction of a single quantum emitter with the electromagnetic field is both enhanced and directed by a nano-optical Yagi-Uda antenna. The single emitter is coupled in the near field to the resonant plasmon mode of the feed element, enhancing both excitation and emission rates. The angular emission of the coupled system is highly directed and determined by the antenna mode. Arbitrary control over the main direction of emission is obtained, regardless of the orientation of the emitter. The directivity is even more increased by the presence of a dielectric substrate, making such antennas a promising candidate for compact easy-to-address planar sensors.

© 2008 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(260.3910) Physical optics : Metal optics
(280.5110) Remote sensing and sensors : Phased-array radar
(350.4238) Other areas of optics : Nanophotonics and photonic crystals
(180.4243) Microscopy : Near-field microscopy

ToC Category:
Optics at Surfaces

Original Manuscript: May 29, 2008
Revised Manuscript: June 23, 2008
Manuscript Accepted: June 28, 2008
Published: July 3, 2008

Tim H. Taminiau, Fernando D. Stefani, and Niek F. van Hulst, "Enhanced directional excitation and emission of single emitters by a nano-optical Yagi-Uda antenna," Opt. Express 16, 10858-10866 (2008)

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